1248255667 has 4 divisors (see below), whose sum is σ = 1260614736. Its totient is φ = 1235896600.

The previous prime is 1248255607. The next prime is 1248255691. The reversal of 1248255667 is 7665528421.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1248255667 is a prime.

It is a super-2 number, since 2×1248255667² = 3116284420395229778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248255607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6179383 + ... + 6179584.

It is an arithmetic number, because the mean of its divisors is an integer number (315153684).

Almost surely, 2^1248255667 is an apocalyptic number.

1248255667 is a deficient number, since it is larger than the sum of its proper divisors (12359069).

1248255667 is a wasteful number, since it uses less digits than its factorization.

1248255667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12359068.

The product of its digits is 806400, while the sum is 46.

The square root of 1248255667 is about 35330.6618534100. The cubic root of 1248255667 is about 1076.7160382212.

The spelling of 1248255667 in words is "one billion, two hundred forty-eight million, two hundred fifty-five thousand, six hundred sixty-seven".